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首页> 外文期刊>Coatings >A Comparative Study of Multifunctional Coatings Based on Electrospun Fibers with Incorporated ZnO Nanoparticles
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A Comparative Study of Multifunctional Coatings Based on Electrospun Fibers with Incorporated ZnO Nanoparticles

机译：掺ZnO纳米粒子的电纺纤维多功能涂层的比较研究

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In this work, polymeric fibers of polystyrene (PS) with incorporated ZnO nanoparticles have been deposited onto an aluminum alloy substrate (6061T6) by using the electrospinning technique. In order to optimize the deposition process, the applied voltage and flow rate have been evaluated in order to obtain micrometric electrospun fibers with a high average roughness and superhydrophobic behavior. Thermogravimetric analysis (TGA) has also been employed in order to corroborate the amount of ZnO incorporated into the electrospun fibers, whereas differential scanning calorimetry (DSC) has been performed in order to determine the glass transition temperature (Tg) of the polymeric electrospun fibers. In addition, a specific thermal treatment (Tg + 20 °C) of the synthesized electrospun fibers has been evaluated in the resultant corrosion resistance. A comparative study with previously reported results corresponding to polyvinyl chloride (PVC) fibers is carried out along this paper to show the changes in behavior due to the different compositions and fiber diameters. The coating has produced an important reduction of the corrosion current of the aluminum substrate in two orders of magnitude, showing also an important enhancement against pitting corrosion resistance. Finally, this deposition technique can be used as an innovative way for the design of both superhydrophobic and anticorrosive surfaces in one unique step over metallic substrates with arbitrary geometry.
机译：在这项工作中，通过使用静电纺丝技术，已将掺有ZnO纳米颗粒的聚苯乙烯（PS）聚合物纤维沉积到铝合金基板（6061T6）上。为了优化沉积过程，已评估了施加的电压和流速，以获得具有高平均粗糙度和超疏水性能的微米级电纺纤维。为了证实掺入到电纺纤维中的ZnO的量，还已经使用热重分析（TGA），而为了确定聚合物电纺纤维的玻璃化转变温度（Tg），已经进行了差示扫描量热法（DSC）。另外，已经评价了合成电纺纤维的特定热处理（Tg + 20℃）的所得耐腐蚀性。沿着本文进行了一项与先前报道的与聚氯乙烯（PVC）纤维相对应的结果的比较研究，以显示由于不同的成分和纤维直径而导致的行为变化。该涂层使铝基材的腐蚀电流显着降低了两个数量级，也显示出抗点蚀性能的重要提高。最后，这种沉积技术可以用作一种创新方法，用于在具有任意几何形状的金属基材上的一个独特步骤中设计超疏水和防腐表面。

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